Purdy AND1781STN-LED - Manual (Page 2)

Displays
Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918
Tel: 408-523-8200 • Fax: 408-733-1287 • [email protected] • www.purdyelectronics.com
08/13/11 2
Optical Specifications
(LCD Module 1/64 Duty, 1/9 Bias, VOP = 12.0V, Ta = 25 ºC)
Item Symbol Condition Min. Typ. Max. Degree
Viewing Angle Range φ f (12 o’clock) When Cr ≥ 1.4 — 20 — degree
φ
b (6 o’clock) — 40 —
φ
l (9 o’clock) — 30 —
φ
r (3 o’clock) — 30 —
Rise Time Tr
VDD-V0=12.2V
Ta=25ºC
— 230 — mS
Fall Time Tf — 250 —
Frame Frequency Frm — 64 — Hz
Contrast Cr — 5.0 —
Brightness of Backlight L IF=690 mA 120 180 — cd/m 2
Peak Emission Wavelength λ P 567 570 577 mm
AND1781STN-LED
Intelligent Character Display
Electrical Characteristics
Item Symbol Condition Min. Typ. Max. Unit
Power Supply for Logic VDD-VSS – 4.5 5.0 5.5 V
Input Voltage
VIH L Level 0 — 0.6 V
VIL H Level 2.2 — VDD V
VDD-V0
Ta = 0ºC — — — V
Ta = 25ºC 10.8 12.2 13.1 V
Ta = 50ºC — — — V
Power Supply
Current for LCM
IDD VDD = 5V — 16.0 25.0 mA
IEE VDD-V0=12.2V — 2.4 — mA
LED Forward Voltage VF If-690 mA — 4.1 4.6 V
LED Forward Current IF — — 690 — mA
LED Reverse Current IR VR=8V — — 0.3 mA
Interface Pin Assignment
Pin No. Pin Out Function Description Pin No Pin Out Function Description
1 FGND For Ground 11 DB0 Data Bit 0
2 VSS Power Supply Ground 12 DB1 Data Bit 1
3 VDD Power Supply Voltage 13 DB2 Data Bit 2
4 V0 Contrast Adjustmnet Voltage 14 DB3 Data Bit 3
5 /WR Data Write 15 DB4 Data Bit 4
6 /RD Data Read 16 DB5 Data Bit 5
7 /CE Enable Signal 17 DB6 Data Bit 6
8 C/D Wr = “l”, C/D = “H”: Command Write; WR = “L”, C/D = “L:”:
Data Write; RD = “L”, C/D = “H”: Status Read; RD = “L”,
C/D = “L”: Data Read
18 DB7 Data Bit 7
9 NC No Connection 19 FS H: 6*8/L : 8*8 Select of Font
10 /RST Reset Signal 20 N/C No connection